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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "SourceBufferResource.h"
#include "mozilla/Logging.h"
#include "mozilla/TaskQueue.h"
#include "MediaData.h"
mozilla::LogModule* GetSourceBufferResourceLog() {
static mozilla::LazyLogModule sLogModule("SourceBufferResource");
return sLogModule;
}
#define SBR_DEBUG(arg, ...) \
DDMOZ_LOG(GetSourceBufferResourceLog(), mozilla::LogLevel::Debug, \
"::%s: " arg, __func__, ##__VA_ARGS__)
#define SBR_DEBUGV(arg, ...) \
DDMOZ_LOG(GetSourceBufferResourceLog(), mozilla::LogLevel::Verbose, \
"::%s: " arg, __func__, ##__VA_ARGS__)
namespace mozilla {
RefPtr<GenericPromise> SourceBufferResource::Close() {
MOZ_ASSERT(OnThread());
SBR_DEBUG("Close");
mClosed = true;
return GenericPromise::CreateAndResolve(true, __func__);
}
nsresult SourceBufferResource::ReadAt(int64_t aOffset, char* aBuffer,
uint32_t aCount, uint32_t* aBytes) {
SBR_DEBUG("ReadAt(aOffset=%" PRId64 ", aBuffer=%p, aCount=%u, aBytes=%p)",
aOffset, aBytes, aCount, aBytes);
return ReadAtInternal(aOffset, aBuffer, aCount, aBytes);
}
nsresult SourceBufferResource::ReadAtInternal(int64_t aOffset, char* aBuffer,
uint32_t aCount,
uint32_t* aBytes) {
MOZ_ASSERT(OnThread());
if (mClosed || aOffset < 0 || uint64_t(aOffset) < mInputBuffer.GetOffset() ||
aOffset > GetLength()) {
return NS_ERROR_FAILURE;
}
uint32_t available = GetLength() - aOffset;
uint32_t count = std::min(aCount, available);
SBR_DEBUGV("offset=%" PRId64 " GetLength()=%" PRId64
" available=%u count=%u mEnded=%d",
aOffset, GetLength(), available, count, mEnded);
if (available == 0) {
SBR_DEBUGV("reached EOF");
*aBytes = 0;
return NS_OK;
}
mInputBuffer.CopyData(aOffset, count, aBuffer);
*aBytes = count;
return NS_OK;
}
nsresult SourceBufferResource::ReadFromCache(char* aBuffer, int64_t aOffset,
uint32_t aCount) {
SBR_DEBUG("ReadFromCache(aBuffer=%p, aOffset=%" PRId64 ", aCount=%u)",
aBuffer, aOffset, aCount);
uint32_t bytesRead;
nsresult rv = ReadAtInternal(aOffset, aBuffer, aCount, &bytesRead);
NS_ENSURE_SUCCESS(rv, rv);
// ReadFromCache return failure if not all the data is cached.
return bytesRead == aCount ? NS_OK : NS_ERROR_FAILURE;
}
uint32_t SourceBufferResource::EvictData(uint64_t aPlaybackOffset,
int64_t aThreshold) {
MOZ_ASSERT(OnThread());
SBR_DEBUG("EvictData(aPlaybackOffset=%" PRIu64
","
"aThreshold=%" PRId64 ")",
aPlaybackOffset, aThreshold);
uint32_t result = mInputBuffer.Evict(aPlaybackOffset, aThreshold);
return result;
}
void SourceBufferResource::EvictBefore(uint64_t aOffset) {
MOZ_ASSERT(OnThread());
SBR_DEBUG("EvictBefore(aOffset=%" PRIu64 ")", aOffset);
mInputBuffer.EvictBefore(aOffset);
}
uint32_t SourceBufferResource::EvictAll() {
MOZ_ASSERT(OnThread());
SBR_DEBUG("EvictAll()");
return mInputBuffer.EvictAll();
}
void SourceBufferResource::AppendData(MediaByteBuffer* aData) {
AppendData(MediaSpan(aData));
}
void SourceBufferResource::AppendData(const MediaSpan& aData) {
MOZ_ASSERT(OnThread());
SBR_DEBUG("AppendData(aData=%p, aLength=%zu)", aData.Elements(),
aData.Length());
mInputBuffer.AppendItem(aData);
mEnded = false;
}
void SourceBufferResource::Ended() {
MOZ_ASSERT(OnThread());
SBR_DEBUG("");
mEnded = true;
}
SourceBufferResource::~SourceBufferResource() { SBR_DEBUG(""); }
SourceBufferResource::SourceBufferResource()
#if defined(DEBUG)
: mThread(AbstractThread::GetCurrent())
#endif
{
SBR_DEBUG("");
}
#if defined(DEBUG)
const AbstractThread* SourceBufferResource::GetThread() const {
return mThread;
}
bool SourceBufferResource::OnThread() const {
return !GetThread() || GetThread()->IsCurrentThreadIn();
}
#endif
#undef SBR_DEBUG
#undef SBR_DEBUGV
} // namespace mozilla